Article ID Journal Published Year Pages File Type
1805242 Journal of Magnetism and Magnetic Materials 2006 4 Pages PDF
Abstract

A quantitative study of the stress-induced martensitic transformation in Ni49.7Mn29.1Ga21.2 magnetic shape memory alloy has been carried out in two different ways: the first way is based on the measurements of saturation magnetization under variable mechanical stress and the second one is founded on the quantitative theoretical treatment of experimental stress–strain loops. A functional dependence between the volume fraction of transformed martensite and applied stress has been determined from both magnetization and strain values. A quantitative agreement between the functions determined in two different ways has been observed, and hence, the effectiveness of the magnetic indication of the stress-induced martensitic transformations has been proved. This method can be used to monitor stress-induced transformations in martensitic films, needles and small specimens.

Related Topics
Physical Sciences and Engineering Physics and Astronomy Condensed Matter Physics
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